JP2004183320A - Clamping device with locking mechanism - Google Patents

Clamping device with locking mechanism Download PDF

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Publication number
JP2004183320A
JP2004183320A JP2002351488A JP2002351488A JP2004183320A JP 2004183320 A JP2004183320 A JP 2004183320A JP 2002351488 A JP2002351488 A JP 2002351488A JP 2002351488 A JP2002351488 A JP 2002351488A JP 2004183320 A JP2004183320 A JP 2004183320A
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Prior art keywords
operation lever
locking claw
lock pin
rotating shaft
lock mechanism
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JP2002351488A
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Japanese (ja)
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JP4285729B2 (en
JP2004183320A5 (en
Inventor
Tadashi Anzai
忠志 安齋
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Sugatsune Kogyo Co Ltd
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Sugatsune Kogyo Co Ltd
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Priority to JP2002351488A priority Critical patent/JP4285729B2/en
Application filed by Sugatsune Kogyo Co Ltd filed Critical Sugatsune Kogyo Co Ltd
Priority to US10/537,170 priority patent/US7226092B2/en
Priority to AU2003284522A priority patent/AU2003284522A1/en
Priority to PCT/JP2003/015381 priority patent/WO2004051037A1/en
Priority to KR1020057009974A priority patent/KR101062518B1/en
Priority to CN2003801048351A priority patent/CN1720380B/en
Publication of JP2004183320A publication Critical patent/JP2004183320A/en
Publication of JP2004183320A5 publication Critical patent/JP2004183320A5/ja
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Publication of JP4285729B2 publication Critical patent/JP4285729B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/18—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using cams, levers, eccentrics, or toggles
    • F16B2/185—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using cams, levers, eccentrics, or toggles using levers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/10—Hook fastenings; Fastenings in which a link engages a fixed hook-like member
    • E05C19/12—Hook fastenings; Fastenings in which a link engages a fixed hook-like member pivotally mounted around an axis
    • E05C19/14—Hook fastenings; Fastenings in which a link engages a fixed hook-like member pivotally mounted around an axis with toggle action
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0025—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/087—Loops
    • Y10T292/0871—Sliding and swinging, lever-operating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/20—Clamps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/20—Clamps
    • Y10T292/205—Ring
    • Y10T292/212—With expanding or contracting means
    • Y10T292/216—Toggle lever

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clamping device, preventing damage of a pin energizing means of a locking mechanism and having good maneuverability. <P>SOLUTION: This clamping device B includes: a support member 5 fixed to one body 1 to be secured; a base member 10 fixed to the other body 2 to be secured; an operating lever 20 having a substantially U-shaped section, the base end part of which is rotatably connected to the base member 10 through a first rotating shaft 31; an arm 40, one end part of which is rotatably connected to a support member 5 through a second rotating shaft 32, the other end part of which is rotatably connected to the base end part of the operating lever 20 through a third rotating shaft 33; and a locking mechanism 50 for locking the operating lever 20 in a position to overlap the base member 10. The locking mechanism 50 includes: a locking claw 14a provided on the base member 10; a locking pin 51 stretched between both side walls 22 of the operating lever 20; and the pin energizing means 55 energizing the locking pin 51 stored in the operating lever 20 and energizing the locking pin 51 toward the locking claw 14a. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、２つの被緊締体を締め付け、この締付状態を維持することができるロック機構付き締付装置に関する。
【０００２】
【従来の技術】
実開平６１−２０８７３号公報に開示された締付装置は、一方の被緊締体に固定された支持金具と、他方の被緊締体に固定されたベース金具と、基端部が第１回動軸を介してベース金具に回動可能に連結された断面略コ字形の操作レバーと、一端部が第２回動軸を介して支持金具に着脱可能かつ回動可能に連結され他端部が第３回動軸を介して上記操作レバーの基端部に回動可能に連結されたアームとを備えている。上記アームは、一端に係止部を有する２つの細長いアーム片と圧縮コイルバネとを含む組立体からなり、第２，第３回動軸を互いに近づける方向に付勢している。
【０００３】
上記締付装置において、上記操作レバーの回動範囲の中間に、上記第３回動軸が第１，第２回動軸と一直線上に位置するデッドポイントがある。操作レバーは第３回動軸がデッドポイントにある位置を超えてベース金具に重なり、この状態で２つの被緊締体が締め付けられるようになっている。この操作レバーのベース金具への重合位置はロック機構により維持される。
【０００４】
上記ロック機構について説明する。操作レバーの一方の側壁には切欠が形成され、この切欠の周縁の一部が係止爪として提供されている。ベース金具には、２つの支持片が切り起こされており、両支持片間にロックピンが掛け渡されている。ロックピンの一端部は、上記支持片の支持穴に遊びをもって挿入されることにより回動可能に支持され、ロックピンの他端部は他方の支持片の長穴を貫通してつまみ部となっている。
【０００５】
上記ベース金具には上記ロックピンから見て第３回動軸の反対側に引掛ピンが固定されており、このロックピンと引掛ピンとの間に引張コイルバネ（ピン付勢手段）が掛けられている。上記のように操作レバーがベース金具に重なった状態において、ロックピンが引張コイルバネに付勢され操作レバーの係止爪に係合された状態を維持される。ロックピンのつまみ部を引張コイルバネに抗して支持片の長穴に沿って移動させると、ロックピンは係止爪から離れて係合解除位置に至る。ロックピンを係合解除位置に維持したまま、操作レバーをベース金具から離れるように回し、さらに操作レバーを回して第３回動軸がデッドポイントを超えることにより、２つの被緊締体の締め付け状態が解除される。
【０００６】
【特許文献１】
実開平６１−２０８７３号公報（図１）
【０００７】
【発明が解決しようとする課題】
しかし、上記公報の装置では、操作レバーがベース金具から離れた状態において、このベース金具に装着された引張コイルバネが露出しており、誤って手で触れて破損させたり、ロックピンから外してしまうおそれがあった。また、締付解除の際には、片方の手でロックピンを係合解除位置にしたまま、他方の手で操作レバーを回す必要があり、操作性が悪かった。
【０００８】
【課題を解決するための手段】
この発明は、上記の問題を解決するためになされたものであり、（イ）一方の被緊締体に固定される支持部材と、（ロ）他方の被緊締体に固定されるベース部材と、（ハ）基端部が第１回動軸を介して上記ベース部材に回動可能に連結された断面略コ字形の操作レバーと、（ニ）一端部が第２回動軸を介して上記支持部材に回動可能に連結され、他端部が第３回動軸を介して上記操作レバーの基端部に回動可能に連結されたアームと、（ホ）ロック機構と、を備え、上記操作レバーの回動に伴い、上記第３回動軸が上記第１，第２回動軸と一直線上に位置するデッドポイントを超え、上記操作レバーが上記ベース部材に重なる位置に達するようにし、この重合位置で操作レバーを上記ロック機構によりロックするようにした締付装置において、
上記ロック機構は、上記ベース部材に設けられた係止爪と、上記操作レバーの両側壁間に掛け渡され係止爪への係合位置と係止爪から離れた係合解除位置との間で移動可能なロックピンと、操作レバー内に収容されロックピンを上記係止爪に向かって付勢してロックピンの係止爪への係合位置を維持するピン付勢手段とを含むことを特徴とする。
【０００９】
上記構成によれば、ピン付勢手段が操作レバー内に収容されているので、誤って人手に触れて破損したり外れたりするのを防止することができる。また、ロックピンが操作レバーに設けられているので、片方の手だけでロックピンの係合解除をしながら操作レバーを回すことができ、操作性が良い。
【００１０】
一態様として、上記アームは第２，第３回動軸を互いに近づけるように付勢する回動軸付勢手段を含み、上記操作レバーはこの回動軸付勢手段により、上記第３回動軸がデッドポイントにある位置から遠ざかる方向に回動付勢される。これにより、アームの回動軸付勢手段で操作アームを回動させることができるので操作性が良い。
【００１１】
他の態様として、上記第１回動軸と第２回動軸との間には、これら第１，第２回動軸を互いに遠ざける方向に付勢する回動軸付勢手段が配置され、上記操作レバーはこの回動軸付勢手段により、上記第３回動軸がデッドポイントにある位置から遠ざかる方向に回動付勢される。これにより、アームの回動軸付勢手段で操作アームを回動させることができるので操作性が良い。
【００１２】
好ましくは、上記ロックピンの一端部は、上記操作レバーの一方の側壁の支持穴に遊びをもって貫通することにより回動可能に支持され、ロックピンの他端部は操作レバーの他方の側壁の長穴を貫通して操作レバーの外に突出するつまみ部となり、上記係止爪は操作レバー内において操作レバーの他の側壁に近接して配置され、上記操作レバーのつまみ部が長穴に沿って、係止爪への係合位置と係止爪から離れた係合解除位置との間で移動可能となっている。この構成によれば、ロックピンの操作アームへの取付構造を簡単にすることができる。
【００１３】
好ましくは、上記係止爪は上記第３回動軸の反対側に突出し、上記ピン付勢手段は引張コイルバネからなり、その一端が上記ロックピンに掛けられ、他端が操作部材に設けられた引掛部に掛けられ、この引掛部はロックピンより操作レバーの基端部側に配置され、この引張コイルバネによりロックピンが第３回動軸に向かって付勢されている。この構成によれば、ピン付勢手段としての引張コイルバネをロックピンと第３回動軸との間に配置するので、操作レバーおよびベース金具を小形にすることができる。
【００１４】
好ましくは、上記第３回動軸が上記引掛部として提供される。この構成によれば、第３回動軸が引張コイルバネの引掛部を兼用するので、操作レバーの構造を簡単にできるとともに、さらに小形にすることができる。
【００１５】
【発明の実施の形態】
以下、本発明の第１実施形態について図１〜図１５を参照しながら説明する。図１に示すように、ケーシング１（一方の被緊締体）の右側縁には、ヒンジ機能を有する締付装置Ａを介して蓋２（他方の被緊締体）の右側縁が回動可能に連結されており、この蓋２によりケーシング１の上部開口が開閉されるようになっている。この蓋２の左側縁は締付装置Ｂを介してケーシング１の左側縁に掛けられ、閉じ状態を維持されるようになっている。なお、ケーシング１の開口周縁にはシール部材３が設けられており、ケーシング１と蓋２とが気密ないしは液密となっている。なお、シール部材３は蓋２に設けてもよい。
【００１６】
最初に締付装置Ｂの詳細な構造について主に図２〜図６を参照しながら説明する。締付装置Ｂは、ケーシング１の側面に固定されたフック形状の支持金具５（支持部材）と、蓋２の左側縁部に固定されたベース金具１０（ベース部材）と、基端部がベース金具１０に第１回動軸３１を介して回動可能に連結された操作レバー２０と、支持金具５と操作レバー２０の基端部とを連携させる一対のアーム４０と、操作レバー２０による蓋２の締付状態を維持するロック機構５０とを備えている。支持金具５は、その上端部にフック部５ａを有している。
【００１７】
ベース金具１０は、蓋２の上面に固定されその左側縁と直交する方向に延びる細長い平板部１１と、この平板部１１と直角をなして蓋２の縁面に沿う短い平板部１２と、平板部１１と直角をなして起こされた本ロック片１３および仮ロック片１４と，平板部１２と直角をなして起こされた一対の支持片１５とを有している。本ロック片１３は平板部１１の幅方向中央に形成されており、その上端部には南京錠のシャックル４（図２にのみ示す）を通すための穴１３ａが形成されている。
【００１８】
上記仮ロック片１４は、上記ロック機構５０の構成要素の１つであり、平板部１１の一方の側縁近傍に形成されており、本ロック片１３と後述する第３回動軸３３との間に配置されている。図７〜図９に最も良く示されているように、仮ロック片１４の上端部には、第３回動軸３３の反対側に突出する係止爪１４ａが形成されており、この係止爪１４ａの上面は傾斜面１４ｂとなっている。上記一対の支持片１５には第１回転軸３１が掛け渡されている。
【００１９】
上記操作レバー２０は断面コ字形をなして細長く形成されており、主壁２１と、この主壁２１の両側縁から直角をなして延びる一対の側壁２２と、基端部の開口を塞ぐ端壁２３とを有している。一対の側壁２２の基端部は上記主壁２１と直交する方向に突出しており、この突出端部２２ａが上記第１回動軸３１を介してベース金具１０に回転可能に支持されている。主壁２１の先端部からはつまみ部２４が延びており、このつまみ部２４には、上記本ロック片１３を通すためのスリット２４ａが形成されている。
【００２０】
上記操作レバー２０の一対の側壁２２の基端部には第３回動軸３３が掛け渡されており、これら側壁２２の先端部間には丸棒形状のロックピン５１が掛け渡されている。図４に最も良く示されているように、ロックピン５１の一端部は、他の部位に比べて小径をなし、一方の側壁２２に形成された丸い支持穴２２ｘを遊びをもって貫通して操作レバー２０の外に突出している。この端部には操作レバー２０の内側において環状の段差が形成され、操作レバー２０の外側において係止リング５２が嵌められており、これら段差と係止リング５２とで、ロックピン５１の端部が操作レバー２０の一方の側壁２２に回動可能に連結されている。
【００２１】
ロックピン５１の他端部は他方の側壁２２（仮ロック片１４に近い方の側壁２２）に形成された傾斜長穴２２ｙを貫通して操作レバー２０の外に突出しており、この長穴２２ｙに沿って移動可能となっている。このロックピン５１の他端部は、つまみ部５１ａとして提供される。長穴２２ｙの左下側の端部（後述するようにロックピン５１の係合位置に対応する端部）と上記支持穴２２ｘとを結ぶ線は、操作レバー２０の長手方向と直交している。
【００２２】
上記第３回動軸３３とロックピン５１との間には引張コイルバネ５５（ピン付勢手段）が掛けられている。第３回動軸３３は、引張りコイルバネ５５の引掛部として提供される。上記引張コイルバネ５５，ロックピン５１は、ロック機構５０の主要構成要素を構成する。なお、図４に示すようにロックピン５１の中央には環状の溝５１ｂが形成されており、この溝５１ｂに引張コイルバネ５５が掛けられることにより、その横ずれが防止されるようになっている。
【００２３】
次に、アーム４０（アーム手段）について詳述する。図５、図６に最も良く示されているように、各アーム４０は、細長い金属板からなる第１アーム片４１および第２アーム片４２と、これらアーム片４１，４２を包む圧縮コイルバネ４３とを含む組立体からなる。第１アーム片４１の上端部はＴ字形をなし横に突出する係止部４１ａを有しており、第２アーム片４２の下端部はＴ字形をなし横に突出する係止部４２ａを有している。上記圧縮コイルバネ４３は、上記係止部４１ａ，４２ａ間に配置され、これら係止部４１ａ，４２ａを互いに遠ざけるように付勢している。なお、上記第１アーム片４１は係止肩部４１ｂを有しており、この係止肩部４１ｂに上記第２アーム片４２の係止部４２ａが当たることにより、係止部４１ａ，４２ａの間隔が広がるのを規制されており、この規制状態で圧縮コイルバネ４３は圧縮状態を維持されている。
【００２４】
一対のアーム４０の第１アーム片４１の下端部間には第２回動軸３２が掛け渡されている。この第２回動軸３２は、支持金具５のフック部５ａに掛けられるようになっており、これによりアーム４０の下端部は第２回動軸３２を介して支持金具５に着脱可能かつ回動可能に連結されるようになっている。また、一対のアーム４０の第２アーム片４２の上端部は、操作レバー２０から外に突出した第３回動軸３３の両端部にそれぞれ連結されている。これにより、アーム４０は第３回動軸３３を介して操作レバー２０の基端部に回動可能に連結されている。
【００２５】
上記締付装置Ｂの作用について、主に図７〜図９を参照しながら説明する。蓋２が閉じた状態において、図７に示すように操作レバー２０がベース金具１０に対して開き、アーム４０が支持金具５から離れた状態にある。まず、操作レバー２０を第１回動軸３１を中心にして時計回り方向に回しながら、第２回動軸３２を支持金具５のフック部５ａに引掛ける。これにより、アーム４０は支持金具５の第２回動軸３２を中心として支持金具５に回動可能に連結されることになる。
【００２６】
さらに操作レバー２０を時計回りに回動させると、第２回動軸３２と第３回動軸３３との間隔が離れ、これに伴いアーム片４１、４２の係止部４１ａ，４２ａの間隔が縮まり、圧縮コイルバネ４３が圧縮される。この圧縮コイルバネ４３の弾性力により、第２回動軸３２と第３回動軸３３には互いに引き付け合う力が働くため、操作レバー２０は反時計回りのモーメントを受け、これと同時に蓋２はケーシング１に押し付けられる。
【００２７】
さらに操作レバー２０を圧縮コイルバネ４３に抗して時計回りに回動させると、第３回動軸３３が図８に示すデッドポイントに至る。すなわち、回動軸３１，３２，３３が同一直線上に配置され、第１回動軸３１が第２回動軸３２と第３回動軸３３との間に配置される。この状態では、第２回動軸３２と第３回動軸３３との間隔は最大限離れており、圧縮コイルバネ４３は最大限に圧縮された状態となる。
【００２８】
上記デッドポイントを超えて操作レバー２０を時計回りに回動させると、圧縮コイルバネ４３により第３回動軸３３を第２回動軸３２へ引き付ける力は、操作アーム２０を時計回りに回動させるモーメントとなり、操作アーム２０はベース１０に向かって回動される。操作アーム２０がベース１０に接近すると、ロックピン５１のつまみ部５１ａの近傍部が係止爪１４ａの傾斜面１４ｂに達する。圧縮コイルバネ４３は引張コイルバネ５５より遥かに強いので、操作レバー２０は図９に示すベース１０との重合位置に達する。この過程で、ロックピン５１のつまみ部５１ａの近傍部が傾斜面１４ｂに沿って移動し、係止爪１４ａの先端を超え、引張コイルバネ５５の力で元に戻り係止爪１４ａの下に入り込む。なお、操作レバー２０の側壁２２に形成された長穴２２ｙが係止爪１４ａの傾斜面１４ｂと交差する方向に傾斜しているため、このようなロックピン５１の動きが可能となる。なお、操作レバー２０のベース金具１０との重合位置までの回動を人手により行ってもよいことは勿論である。
【００２９】
上記のようにして操作レバー２０がベース１０に重なった状態では、アーム４０の圧縮コイルバネ４３の弾性力により、蓋２はケーシング１に締め付けられた状態となる。操作レバー２０に設けられたロックピン５１がベース金具１０に設けられた係止爪１４ａに係止されて仮ロックされているので、蓋２に開き方向の外力が働いても操作レバー２０が反時計回りに回動せず、上記締付状態を維持できる。
【００３０】
なお、操作レバー２０がベース金具１０に重合した位置では、操作レバー２０のつまみ部２４のスリット２４ａがベース金具１０の本ロック片１３に嵌っており、この本ロック片１３の穴１３ａに南京錠のシャックル４を通すことにより、本ロックを行うことができる。
【００３１】
蓋２の締付状態を解除する場合には、本ロック状態を解除した後、ロックピン５１のつまみ部５１ａを引張コイルバネ５５に抗して第３回動軸３３から遠ざける方向に長穴２２ｙに沿って移動する。これにより、ロックピン５１と係止爪１４ａの係合状態が解除され、仮ロック状態が解除される。上記のようにしてロックピン５１を係合解除位置に維持したまま、操作レバー２０を圧縮コイルバネ４３に抗して反時計回りに回動させてベース金具１０から遠ざける。なお、ロックピン５１の係合解除と操作レバー２０の回動は片方の手で同時に行うことができるので操作性が良い。
【００３２】
操作レバー２０をさらに圧縮コイルバネ４３に抗して反時計回りに回動させるとやがて図８のデッドポイントに至り、さらに同方向に回動させると、操作レバー２０は圧縮コイルバネ４３により反時計回りのモーメントを受け、やがて図７に示す状態となり第２回動軸３２も支持金具５から離れる。このようにして締付状態を解除された蓋２は開き動作が可能となる。
【００３３】
操作レバー２０がベース１０から離れた状態において、引張コイルバネ５５は断面コ字形をなす操作レバー２０内に収容されているので、誤って人手に触れて破損したり外れたりするのを防止することができる。
【００３４】
次に、蓋２の回動中心側に位置する締付装置Ａについて図１０〜図１５を参照しながら説明する。この締付装置Ａは、締付装置Ｂと同様の３つの回動軸３１〜３３，操作レバー２０，ロック機構５０を備えている。蓋２に固定されるベース金具は締付装置Ｂと形状が異なるが図において同符号を付する。
【００３５】
締付装置Ａにおいて、ケーシング１には断面コ字形をなす支持金具６５（支持部材）が固定されている。この支持金具６５の上端部の両側壁には第２回動軸３２が貫通している。細長い金属板を一部屈曲させてなる一対のアーム７０の下端部は、支持金具６５の外側において第２回動軸３２の両端部に連結され、これにより第２回動軸３２を介して支持金具６５に着脱不能で回動可能に連結されている。アーム７０の上端部は、第３回動軸３３を介して操作レバー２０の基端部に回動可能に連結されている。
【００３６】
上記ベース金具１０の一対の支持片１５は、ケーシング１に向かって延びる延長部１５ａを有しており、この延長部１５ａは、上記支持金具６５の両側壁の内側に配置されている。図１５に最も良く示されているように、この延長部１５ａには、蓋２の閉じ状態においてほぼ垂直に延びる長穴１５ｂが形成されており、この長穴１５ｂに第２回動軸３２が貫通している。
【００３７】
第１回動軸３１と第２回動軸３２との間には圧縮コイルバネ８０（回動軸付勢手段）が介在されており、両回動軸３１，３２を互いに遠ざけるように付勢している。この圧縮コイルバネ８０は、円筒形状の保護筒８１に収容されている。この保護筒８１の一端部（蓋閉じ状態の上端部）には第１回動軸３１が貫通している。図１５に最も良く示されているように、保護筒８１の他端部には第２回動軸３２が貫通させるスリット８１ａが形成されている。これにより、保護筒８１は回動軸３１，３２の相対移動を許容しながらこれら回動軸３１，３２間に支持されている。
【００３８】
締付装置Ａでは、ベース金具１０に本ロック片が形成されていない。その代わりに、図１３〜図１５に示すように操作アーム２０において仮ロック片１４の反対側の側壁２２には、支持穴２２ｘの近傍にロック穴２５が形成されている。このロック穴２５と長穴２２ｙの右上の端部（ロックピン５１の係合解除位置に対応する端部）とを結ぶ線は操作レバー２０と直交している。このロック穴２５と長穴２２ｙの右上の端部とを貫通する本ロック部材９０（図１にのみ示す）を貫通することにより、ロックピン５１の係合解除位置への移動が禁じられ、本ロックがなされる。
【００３９】
上記締付装置Ａの作用を図１３〜図１５を参照しながら説明する。蓋２は第２回動軸３２を中心として、図１３の開き状態から図１４の閉じ位置まで回動する。図１４の状態では蓋２はケーシング１から浮いており、この浮き状態は圧縮コイルバネ８０の弾性力で維持される。この状態で、操作レバー２０を圧縮コイルバネ８０に抗して反時計回りに回動すると、３つの回動軸３１，３２，３３が一直線上に位置するデットポイントに達する。この過程において、アーム７０が操作レバー２０に追随して反時計回りに回動してほぼ起立状態となるが、アーム７０の長さが殆ど変わらないため、第１回動軸３１が下降することになり、これに追随して蓋２が下降してシール部材３を押し当てられる。このように蓋２は、閉じ動作に際してシール部材３に触れず、操作レバー２０の回動に伴って下降してシール部材３に押し当てられるので、シール部材３をよじることなく良好に変形させることができ、シール性を高めることができる。
【００４０】
なお、ベース金具１０の支持片１５の延長部１５ａに長穴１５ｂが形成され、保護筒８１にスリット８１ａが形成され、これら長穴１５ｂ，スリット８１ａに第２回動軸３２が通っているので、蓋２の下降が許容される。
【００４１】
操作レバー２０がデッドポイントを過ぎると、圧縮コイルバネ８０の力で操作レバー２０はベース金具１０に向かって回動付勢され図１５に示す重ね位置に達する。この後のロック機構５０によるロック，ロック解除の作用については前述した締付装置Ｂと同様であるので、説明を省略する。
【００４２】
上記操作レバー２０がベース金具１０に重なった状態では、上記デッドポイントの時より蓋２がケーシング１から若干離れるが、シール部材３への押圧状態は維持される。ロック解除後に、操作レバー２０を時計回りに回動させ、デッドポイントを超えて図１５の位置から図１４の位置に戻すと、蓋２がシール部材３から浮く。その後で蓋２を開く。
【００４３】
図１６は、前述した締付装置Ｂを一部変形した締付装置Ｂ’を示す。この締付装置Ｂ’では、アーム１００だけが締付装置Ｂと異なり、他の構成は同様であるので説明を省略する。一対のアーム１００は細長い金属板を一部屈曲させてなり、その両端部が第２回動軸３２と第３回動軸３３に連結されている。操作レバー２０がデッドポイントまたはその近傍に位置している時には、アーム１００の屈曲部の弾性変形またはシール部材３の弾性変形が生じている。
【００４４】
なお、本発明は、上記実施の形態に限定されるものでなく、適宜変更可能である。例えば本ロックの構造は省いてもよい。
【００４５】
【発明の効果】
以上説明したように本発明によれば、ロックピンを付勢するピン付勢手段を操作レバー内に収容するので、人手により損傷するのを防止できる。また、ロック解除して操作レバーをベース部材から離す際の操作性が良い。
【図面の簡単な説明】
【図１】本発明に係わる２つの締付装置を備えた蓋付きケーシングの上部を示す概略側面図である。
【図２】一方の締付装置の拡大側面図である。
【図３】図２においてＩＩＩ方向から見た締付装置の拡大平面図である。
【図４】図２においてＩＶ−ＩＶ線に沿う締付装置の平断面図である。
【図５】図２においてＶ方向から見た締付装置の正面図である。
【図６】図２においてＶＩ−ＶＩ線に沿う締付装置の断面図である。
【図７】同締付装置の締付前の状態を示す側断面図である。
【図８】同締付装置の締付途中のデッドポイントの状態を示す側断面図である。
【図９】同締付装置の締付状態を示す側断面図である。
【図１０】他方のヒンジ機能付きの締付装置の拡大側面図である。
【図１１】同締付装置の平面図である。
【図１２】同締付装置の正面図である。
【図１３】蓋開き状態での同締付装置を示す側断面図である。
【図１４】蓋閉じ状態で締付前の同締付装置を示す側断面図である。
【図１５】同締付装置の締付状態を示す側断面図である。
【図１６】本発明の他の実施形態を示す図６相当図である。
【符号の説明】
１ ケーシング（一方の被緊締体）
２ 蓋（他方の被緊締体）
５ 支持金具（支持部材）
１０ ベース金具（ベース部材）
２０ 操作レバー
２２ 側壁
２２ｘ 支持穴
２２ｙ 長穴
３１ 第１回動軸
３２ 第２回動軸
３３ 第３回動軸
４０ アーム
４３ 圧縮コイルバネ（回動軸付勢手段）
５０ ロック機構
５１ ロックピン
５５ 引張コイルバネ（ピン付勢手段）
６５ 支持金具（支持部材）
７０ アーム
８０ 圧縮コイルバネ（回動軸付勢手段）
１００ アーム[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tightening device with a lock mechanism that can tighten two tightened bodies and maintain the tightened state.
[0002]
[Prior art]
The fastening device disclosed in Japanese Utility Model Laid-Open Publication No. 61-20873 discloses a support fitting fixed to one tightened body, a base fitting fixed to the other tightened body, and a base end that is first rotated. An operation lever having a substantially U-shaped cross section rotatably connected to the base bracket via a shaft, and one end portion detachably and rotatably connected to the support bracket via a second rotation shaft, and the other end portion An arm rotatably connected to a base end of the operation lever via a third rotation shaft. The arm is composed of an assembly including two elongated arm pieces having a locking portion at one end and a compression coil spring, and urges the second and third rotating shafts in directions approaching each other.
[0003]
In the above-mentioned tightening device, there is a dead point where the third rotation axis is located in line with the first and second rotation axes in the middle of the rotation range of the operation lever. The operation lever overlaps the base fitting beyond the position where the third rotation axis is at the dead point, and in this state, the two tightened members are tightened. The overlapping position of the operation lever on the base fitting is maintained by the lock mechanism.
[0004]
The lock mechanism will be described. A cutout is formed in one side wall of the operation lever, and a part of the periphery of the cutout is provided as a locking claw. Two support pieces are cut and raised in the base fitting, and a lock pin is stretched between the two support pieces. One end of the lock pin is rotatably supported by being inserted into the support hole of the support piece with play, and the other end of the lock pin passes through the long hole of the other support piece to form a knob. ing.
[0005]
A hook pin is fixed to the base fitting on the side opposite to the third rotation axis as viewed from the lock pin, and a tension coil spring (pin urging means) is hung between the lock pin and the hook pin. In the state where the operation lever overlaps the base metal as described above, the state in which the lock pin is urged by the tension coil spring and engaged with the locking claw of the operation lever is maintained. When the knob of the lock pin is moved along the elongated hole of the support piece against the tension coil spring, the lock pin moves away from the locking claw to reach the disengaged position. While the lock pin is maintained at the disengaged position, the operating lever is turned away from the base metal fitting, and the operating lever is further turned to cause the third rotating shaft to exceed the dead point, thereby tightening the two tightened members. Is released.
[0006]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 61-20873 (FIG. 1)
[0007]
[Problems to be solved by the invention]
However, in the device disclosed in the above publication, the tension coil spring mounted on the base metal fitting is exposed when the operation lever is separated from the base metal fitting, so that the tension coil spring is touched by hand and damaged or detached from the lock pin. There was a fear. Further, when releasing the tightening, it is necessary to turn the operation lever with the other hand while keeping the lock pin at the disengagement position with one hand, and the operability is poor.
[0008]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems, and (A) a supporting member fixed to one tightened member; and (B) a base member fixed to the other tightened member. (C) an operation lever having a substantially U-shaped cross section whose base end portion is rotatably connected to the base member via a first rotation shaft; and (d) one end portion of which is connected to the base member via a second rotation shaft. An arm rotatably connected to the support member, the other end of which is rotatably connected to a base end of the operation lever via a third rotation shaft, and (e) a lock mechanism; With the rotation of the operation lever, the third rotation axis exceeds a dead point located in line with the first and second rotation axes, and the operation lever reaches a position overlapping the base member. In the fastening device, the operation lever is locked by the lock mechanism at the overlapping position.
The lock mechanism is provided between a locking claw provided on the base member and an engagement position with the locking claw, which is bridged between both side walls of the operation lever, and an engagement release position separated from the locking claw. And a pin urging means accommodated in the operation lever and urging the lock pin toward the locking claw to maintain an engagement position of the lock pin with the locking claw. Features.
[0009]
According to the above configuration, since the pin urging means is housed in the operation lever, it is possible to prevent the pin urging means from being accidentally touched and damaged or detached. Further, since the lock pin is provided on the operation lever, the operation lever can be turned while disengaging the lock pin with only one hand, and the operability is good.
[0010]
In one embodiment, the arm includes a rotating shaft biasing unit that biases the second and third rotating shafts closer to each other, and the operation lever is driven by the third rotating shaft by the rotating shaft biasing unit. The shaft is rotationally biased in a direction away from the position at the dead point. Thereby, the operation arm can be rotated by the rotating shaft urging means of the arm, so that the operability is good.
[0011]
As another aspect, between the first rotating shaft and the second rotating shaft, a rotating shaft biasing unit that biases the first and second rotating shafts in a direction away from each other is disposed. The operating lever is biased by the rotating shaft biasing means in a direction in which the third rotating shaft moves away from the position at the dead point. Thereby, the operation arm can be rotated by the rotating shaft urging means of the arm, so that the operability is good.
[0012]
Preferably, one end of the lock pin is rotatably supported by allowing a play hole to pass through a support hole of one side wall of the operation lever, and the other end of the lock pin has a length equal to the length of the other side wall of the operation lever. A knob portion that penetrates the hole and protrudes out of the operation lever, the locking claw is disposed in the operation lever near the other side wall of the operation lever, and the knob portion of the operation lever extends along the elongated hole. It is movable between an engagement position with the locking claw and a disengagement position separated from the locking claw. According to this configuration, the structure for attaching the lock pin to the operation arm can be simplified.
[0013]
Preferably, the locking claw protrudes on the opposite side of the third rotation shaft, the pin urging means is formed of a tension coil spring, one end of which is hooked on the lock pin, and the other end is provided on the operation member. The hook is placed on the hook, and the hook is disposed closer to the base end of the operation lever than the lock pin, and the tension pin spring biases the lock pin toward the third rotation axis. According to this configuration, since the tension coil spring as the pin urging means is disposed between the lock pin and the third rotation shaft, the operation lever and the base metal can be reduced in size.
[0014]
Preferably, the third pivot is provided as the hook. According to this configuration, since the third rotating shaft also serves as the hook of the tension coil spring, the structure of the operation lever can be simplified and the size can be further reduced.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the right edge of the lid 2 (the other tightened body) is rotatable on the right side edge of the casing 1 (one tightened body) via a fastening device A having a hinge function. The upper opening of the casing 1 is opened and closed by the lid 2. The left edge of the lid 2 is hung on the left edge of the casing 1 via the fastening device B, and is kept closed. In addition, a sealing member 3 is provided on the periphery of the opening of the casing 1, and the casing 1 and the lid 2 are air-tight or liquid-tight. Note that the seal member 3 may be provided on the lid 2.
[0016]
First, the detailed structure of the fastening device B will be described mainly with reference to FIGS. The fastening device B includes a hook-shaped support member 5 (support member) fixed to the side surface of the casing 1, a base metal member 10 (base member) fixed to the left edge of the lid 2, and a base end portion having a base. An operation lever 20 rotatably connected to the metal fitting 10 via a first rotation shaft 31, a pair of arms 40 for linking the support metal fitting 5 and a base end of the operation lever 20, and a lid formed by the operation lever 20 2 and a lock mechanism 50 for maintaining the tightened state. The support fitting 5 has a hook 5a at the upper end.
[0017]
The base fitting 10 includes an elongated flat plate portion 11 fixed to the upper surface of the lid 2 and extending in a direction perpendicular to the left edge thereof, a short flat plate portion 12 perpendicular to the flat plate portion 11 and along the edge surface of the lid 2, It has a main lock piece 13 and a temporary lock piece 14 raised at a right angle to the portion 11, and a pair of support pieces 15 raised at a right angle to the flat plate portion 12. The lock piece 13 is formed at the center in the width direction of the flat plate portion 11, and has an upper end formed with a hole 13a for passing the shackle 4 (shown only in FIG. 2) of the padlock.
[0018]
The temporary lock piece 14 is one of the components of the lock mechanism 50, is formed near one side edge of the flat plate portion 11, and is formed between the main lock piece 13 and a third rotation shaft 33 described later. It is located between them. As best shown in FIGS. 7 to 9, a locking claw 14 a protruding on the opposite side of the third rotation shaft 33 is formed at the upper end of the temporary lock piece 14. The upper surface of the claw 14a is an inclined surface 14b. A first rotation shaft 31 is stretched over the pair of support pieces 15.
[0019]
The operation lever 20 is formed in a slender shape having a U-shaped cross section, and includes a main wall 21, a pair of side walls 22 extending at right angles from both side edges of the main wall 21, and an end wall closing an opening at a base end portion. 23. The base ends of the pair of side walls 22 protrude in a direction orthogonal to the main wall 21, and the protruding ends 22 a are rotatably supported by the base fitting 10 via the first rotation shaft 31. A knob 24 extends from the tip of the main wall 21, and a slit 24 a is formed in the knob 24 for passing the lock piece 13.
[0020]
A third rotating shaft 33 extends between the base ends of the pair of side walls 22 of the operation lever 20, and a round bar-shaped lock pin 51 extends between the distal ends of the side walls 22. . As shown best in FIG. 4, one end of the lock pin 51 has a smaller diameter than the other part, and penetrates with a play through a round support hole 22x formed in one of the side walls 22 so that the operation lever can be operated. Projecting out of 20. At this end, an annular step is formed inside the operation lever 20, and a locking ring 52 is fitted outside the operation lever 20, and the step and the locking ring 52 form an end of the lock pin 51. Is rotatably connected to one side wall 22 of the operation lever 20.
[0021]
The other end of the lock pin 51 protrudes out of the operation lever 20 through an oblong elongated hole 22y formed in the other side wall 22 (the side wall 22 closer to the temporary lock piece 14). It is possible to move along. The other end of the lock pin 51 is provided as a knob 51a. The line connecting the lower left end of the elongated hole 22y (the end corresponding to the engagement position of the lock pin 51 as described later) and the support hole 22x is orthogonal to the longitudinal direction of the operation lever 20.
[0022]
A tension coil spring 55 (pin urging means) is hung between the third rotation shaft 33 and the lock pin 51. The third rotation shaft 33 is provided as a hook of the tension coil spring 55. The tension coil spring 55 and the lock pin 51 constitute main components of the lock mechanism 50. As shown in FIG. 4, an annular groove 51b is formed in the center of the lock pin 51, and a lateral displacement thereof is prevented by engaging a tension coil spring 55 in the groove 51b.
[0023]
Next, the arm 40 (arm means) will be described in detail. As best shown in FIGS. 5 and 6, each arm 40 includes a first arm piece 41 and a second arm piece 42 made of an elongated metal plate, and a compression coil spring 43 wrapping these arm pieces 41 and 42. Comprising an assembly. The upper end of the first arm piece 41 has a locking portion 41a that is T-shaped and projects laterally, and the lower end of the second arm piece 42 has a locking portion 42a that is T-shaped and projects laterally. are doing. The compression coil spring 43 is disposed between the locking portions 41a and 42a, and urges the locking portions 41a and 42a away from each other. Note that the first arm piece 41 has a locking shoulder 41b, and the locking portion 42a of the second arm piece 42 hits the locking shoulder 41b, so that the locking portions 41a, 42a are The expansion of the interval is restricted, and in this restricted state, the compression coil spring 43 is maintained in a compressed state.
[0024]
The second rotating shaft 32 extends between the lower ends of the first arm pieces 41 of the pair of arms 40. The second rotating shaft 32 is configured to be hooked on the hook 5 a of the support fitting 5, whereby the lower end of the arm 40 is detachably attached to the support fitting 5 via the second rotating shaft 32 and is turned. It is adapted to be movably connected. The upper ends of the second arm pieces 42 of the pair of arms 40 are respectively connected to both ends of the third rotation shaft 33 protruding outside from the operation lever 20. Thus, the arm 40 is rotatably connected to the base end of the operation lever 20 via the third rotation shaft 33.
[0025]
The operation of the tightening device B will be described mainly with reference to FIGS. In a state where the lid 2 is closed, the operation lever 20 is opened with respect to the base fitting 10 and the arm 40 is separated from the support fitting 5 as shown in FIG. First, the second rotation shaft 32 is hooked on the hook portion 5 a of the support fitting 5 while turning the operation lever 20 clockwise about the first rotation shaft 31. Thus, the arm 40 is rotatably connected to the support fitting 5 about the second rotation shaft 32 of the support fitting 5.
[0026]
When the operation lever 20 is further rotated clockwise, the distance between the second rotation shaft 32 and the third rotation shaft 33 increases, and the distance between the locking portions 41a and 42a of the arm pieces 41 and 42 accordingly increases. It contracts, and the compression coil spring 43 is compressed. Due to the elastic force of the compression coil spring 43, a force attracting each other acts on the second rotation shaft 32 and the third rotation shaft 33, so that the operation lever 20 receives a counterclockwise moment, and at the same time, the lid 2 Pressed against casing 1.
[0027]
When the operation lever 20 is further rotated clockwise against the compression coil spring 43, the third rotation shaft 33 reaches the dead point shown in FIG. That is, the rotating shafts 31, 32, and 33 are arranged on the same straight line, and the first rotating shaft 31 is arranged between the second rotating shaft 32 and the third rotating shaft 33. In this state, the interval between the second rotation shaft 32 and the third rotation shaft 33 is as far as possible, and the compression coil spring 43 is in a state of being compressed to the maximum.
[0028]
When the operation lever 20 is rotated clockwise beyond the dead point, the force of the compression coil spring 43 pulling the third rotation shaft 33 toward the second rotation shaft 32 causes the operation arm 20 to rotate clockwise. As a moment, the operation arm 20 is rotated toward the base 10. When the operation arm 20 approaches the base 10, the portion near the knob 51a of the lock pin 51 reaches the inclined surface 14b of the locking claw 14a. Since the compression coil spring 43 is much stronger than the tension coil spring 55, the operation lever 20 reaches the position where the operation lever 20 overlaps the base 10 shown in FIG. In this process, the portion near the knob 51a of the lock pin 51 moves along the inclined surface 14b, passes over the tip of the locking claw 14a, returns to the original position by the tension coil spring 55, and enters under the locking claw 14a. . Since the elongated hole 22y formed in the side wall 22 of the operation lever 20 is inclined in a direction intersecting the inclined surface 14b of the locking claw 14a, such a movement of the lock pin 51 is possible. It is needless to say that the rotation of the operation lever 20 to the overlapping position with the base fitting 10 may be manually performed.
[0029]
When the operation lever 20 overlaps the base 10 as described above, the lid 2 is fastened to the casing 1 by the elastic force of the compression coil spring 43 of the arm 40. Since the lock pin 51 provided on the operation lever 20 is temporarily locked by being locked by the locking claw 14a provided on the base fitting 10, even if an external force in the opening direction acts on the lid 2, the operation lever 20 is not moved. The tightened state can be maintained without rotating clockwise.
[0030]
In the position where the operation lever 20 is overlapped with the base metal fitting 10, the slit 24 a of the knob 24 of the operation lever 20 is fitted to the main lock piece 13 of the base metal 10, and the padlock of the padlock is inserted into the hole 13 a of the main lock piece 13. The main lock can be performed by passing the shackle 4.
[0031]
When releasing the tightened state of the lid 2, after releasing this locked state, the knob 51 a of the lock pin 51 is inserted into the elongated hole 22 y in a direction away from the third rotation shaft 33 against the tension coil spring 55. Move along. Thereby, the engagement state between the lock pin 51 and the locking claw 14a is released, and the provisionally locked state is released. While the lock pin 51 is maintained at the disengaged position as described above, the operation lever 20 is turned counterclockwise against the compression coil spring 43 to move it away from the base fitting 10. Since the disengagement of the lock pin 51 and the rotation of the operation lever 20 can be performed simultaneously with one hand, operability is good.
[0032]
When the operation lever 20 is further turned counterclockwise against the compression coil spring 43, the dead point shown in FIG. 8 is reached. When the operation lever 20 is further turned in the same direction, the operation lever 20 is turned counterclockwise by the compression coil spring 43. Upon receiving the moment, the state shown in FIG. 7 is established, and the second rotating shaft 32 also separates from the support fitting 5. The lid 2 released from the tightened state in this way can be opened.
[0033]
In a state where the operation lever 20 is separated from the base 10, the tension coil spring 55 is housed in the operation lever 20 having a U-shaped cross section, so that it is possible to prevent the operation lever 20 from being accidentally touched by humans and damaged or detached. it can.
[0034]
Next, the fastening device A located on the rotation center side of the lid 2 will be described with reference to FIGS. The tightening device A includes the same three rotating shafts 31 to 33 as the tightening device B, an operation lever 20, and a lock mechanism 50. The base fitting fixed to the lid 2 has a different shape from that of the fastening device B, but is given the same reference numeral in the figure.
[0035]
In the fastening device A, a support bracket 65 (support member) having a U-shaped cross section is fixed to the casing 1. The second rotating shaft 32 penetrates both side walls of the upper end of the support fitting 65. The lower ends of a pair of arms 70 formed by partially bending an elongated metal plate are connected to both ends of the second rotation shaft 32 outside the support bracket 65, thereby supporting the second rotation shaft 32 via the second rotation shaft 32. It is non-detachably and rotatably connected to the metal fitting 65. The upper end of the arm 70 is rotatably connected to the base end of the operation lever 20 via the third rotation shaft 33.
[0036]
The pair of support pieces 15 of the base fitting 10 have an extension 15 a extending toward the casing 1, and the extension 15 a is arranged inside the both side walls of the support fitting 65. As best shown in FIG. 15, an elongated hole 15b extending substantially vertically when the lid 2 is closed is formed in the extension 15a, and the second rotating shaft 32 is inserted into the elongated hole 15b. Penetrates.
[0037]
A compression coil spring 80 (rotating shaft biasing means) is interposed between the first rotating shaft 31 and the second rotating shaft 32, and urges both rotating shafts 31 and 32 away from each other. ing. The compression coil spring 80 is housed in a cylindrical protection cylinder 81. The first rotating shaft 31 penetrates one end (the upper end in the closed state) of the protection cylinder 81. As best shown in FIG. 15, a slit 81 a through which the second rotation shaft 32 passes is formed at the other end of the protection cylinder 81. Thus, the protection cylinder 81 is supported between the rotation shafts 31 and 32 while allowing the relative movement of the rotation shafts 31 and 32.
[0038]
In the fastening device A, the lock piece is not formed on the base fitting 10. Instead, as shown in FIGS. 13 to 15, a lock hole 25 is formed near the support hole 22 x on the side wall 22 of the operation arm 20 opposite to the temporary lock piece 14. The line connecting the lock hole 25 and the upper right end (the end corresponding to the disengagement position of the lock pin 51) of the elongated hole 22y is orthogonal to the operation lever 20. By penetrating the lock member 90 (only shown in FIG. 1) penetrating the lock hole 25 and the upper right end of the elongated hole 22y, the movement of the lock pin 51 to the disengaged position is prohibited, Lock is made.
[0039]
The operation of the tightening device A will be described with reference to FIGS. The lid 2 rotates about the second rotation shaft 32 from the open state in FIG. 13 to the closed position in FIG. In the state shown in FIG. 14, the lid 2 is floating from the casing 1, and this floating state is maintained by the elastic force of the compression coil spring 80. In this state, when the operation lever 20 is rotated counterclockwise against the compression coil spring 80, the three rotation shafts 31, 32, and 33 reach a dead point where they are located on a straight line. In this process, the arm 70 follows the operation lever 20 and rotates counterclockwise to be almost upright. However, since the length of the arm 70 hardly changes, the first rotating shaft 31 moves down. Following this, the lid 2 descends and the sealing member 3 is pressed. As described above, the lid 2 does not touch the seal member 3 at the time of the closing operation, but descends with the rotation of the operation lever 20 and is pressed against the seal member 3, so that the seal member 3 can be deformed well without kinking. And the sealing property can be improved.
[0040]
In addition, an elongated hole 15b is formed in the extension 15a of the support piece 15 of the base metal fitting 10, a slit 81a is formed in the protective cylinder 81, and the second rotary shaft 32 passes through the elongated hole 15b and the slit 81a. , The lowering of the lid 2 is allowed.
[0041]
When the operation lever 20 passes the dead point, the operation lever 20 is rotated and urged toward the base fitting 10 by the force of the compression coil spring 80, and reaches the overlapping position shown in FIG. The operation of the locking and unlocking by the lock mechanism 50 thereafter is the same as that of the above-described tightening device B, and therefore the description is omitted.
[0042]
In a state where the operation lever 20 is overlapped with the base fitting 10, the lid 2 is slightly apart from the casing 1 at the time of the dead point, but the pressing state on the seal member 3 is maintained. After the lock is released, when the operation lever 20 is rotated clockwise to return from the position in FIG. 15 to the position in FIG. 14 beyond the dead point, the lid 2 floats from the seal member 3. After that, the lid 2 is opened.
[0043]
FIG. 16 shows a fastening device B ′ obtained by partially modifying the fastening device B described above. In this tightening device B ', only the arm 100 is different from the tightening device B, and the other configuration is the same. The pair of arms 100 is formed by partially bending an elongated metal plate, and both ends thereof are connected to a second rotation shaft 32 and a third rotation shaft 33. When the operating lever 20 is located at or near the dead point, elastic deformation of the bent portion of the arm 100 or elastic deformation of the seal member 3 has occurred.
[0044]
Note that the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, the structure of the lock may be omitted.
[0045]
【The invention's effect】
As described above, according to the present invention, since the pin urging means for urging the lock pin is housed in the operation lever, it is possible to prevent the damage by hand. Further, the operability when releasing the lock and releasing the operation lever from the base member is good.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing an upper part of a casing with a lid provided with two fastening devices according to the present invention.
FIG. 2 is an enlarged side view of one fastening device.
FIG. 3 is an enlarged plan view of the fastening device as viewed from a direction III in FIG. 2;
FIG. 4 is a plan sectional view of the fastening device taken along the line IV-IV in FIG. 2;
FIG. 5 is a front view of the fastening device as viewed from a direction V in FIG. 2;
FIG. 6 is a sectional view of the fastening device taken along the line VI-VI in FIG. 2;
FIG. 7 is a side sectional view showing a state before tightening of the tightening device.
FIG. 8 is a side sectional view showing a state of a dead point during the fastening of the fastening device.
FIG. 9 is a side sectional view showing a tightened state of the tightening device.
FIG. 10 is an enlarged side view of the other fastening device with a hinge function.
FIG. 11 is a plan view of the fastening device.
FIG. 12 is a front view of the fastening device.
FIG. 13 is a side sectional view showing the fastening device in a state where a lid is opened.
FIG. 14 is a side sectional view showing the tightening device before tightening with the lid closed.
FIG. 15 is a side sectional view showing a tightened state of the tightening device.
FIG. 16 is a diagram corresponding to FIG. 6, showing another embodiment of the present invention.
[Explanation of symbols]
1 casing (one tightened body)
2 lid (the other tightened body)
5 Support brackets (support members)
10 Base bracket (base member)
Reference Signs List 20 Operation lever 22 Side wall 22x Support hole 22y Elongated hole 31 First rotation axis 32 Second rotation axis 33 Third rotation axis 40 Arm 43 Compression coil spring (Rotation axis biasing means)
Reference Signs List 50 lock mechanism 51 lock pin 55 tension coil spring (pin biasing means)
65 Support bracket (support member)
70 arm 80 compression coil spring (rotating shaft biasing means)
100 arm

Claims (6)

（イ）一方の被緊締体に固定される支持部材と、
（ロ）他方の被緊締体に固定されるベース部材と、
（ハ）基端部が第１回動軸を介して上記ベース部材に回動可能に連結された断面略コ字形の操作レバーと、
（ニ）一端部が第２回動軸を介して上記支持部材に回動可能に連結され、他端部が第３回動軸を介して上記操作レバーの基端部に回動可能に連結されたアームと、
（ホ）ロック機構と、
を備え、上記操作レバーの回動に伴い、上記第３回動軸が上記第１，第２回動軸と一直線上に位置するデッドポイントを超え、上記操作レバーが上記ベース部材に重なる位置に達するようにし、この重合位置で操作レバーを上記ロック機構によりロックするようにした締付装置において、
上記ロック機構は、上記ベース部材に設けられた係止爪と、上記操作レバーの両側壁間に掛け渡され係止爪への係合位置と係止爪から離れた係合解除位置との間で移動可能なロックピンと、操作レバー内に収容されロックピンを上記係止爪に向かって付勢してロックピンの係止爪への係合位置を維持するピン付勢手段とを含むことを特徴とするロック機構付き締付装置。(B) a support member fixed to one of the tightened bodies;
(B) a base member fixed to the other tightened body;
(C) an operation lever having a substantially U-shaped cross section, a base end of which is rotatably connected to the base member via a first rotation shaft;
(D) One end is rotatably connected to the support member via a second rotation shaft, and the other end is rotatably connected to the base end of the operation lever via a third rotation shaft. Arm and
(E) a lock mechanism,
And the third rotation axis exceeds a dead point located in line with the first and second rotation axes with the rotation of the operation lever, so that the operation lever overlaps the base member. In the fastening device, the operating lever is locked by the lock mechanism at this overlapping position.
The lock mechanism is provided between a locking claw provided on the base member and an engagement position with the locking claw, which is bridged between both side walls of the operation lever, and an engagement release position separated from the locking claw. And a pin urging means accommodated in the operation lever and urging the lock pin toward the locking claw to maintain an engagement position of the lock pin with the locking claw. Characteristic fastening device with lock mechanism. 上記アームは第２，第３回動軸を互いに近づけるように付勢する回動軸付勢手段を含み、上記操作レバーはこの回動軸付勢手段により、上記第３回動軸がデッドポイントにある位置から遠ざかる方向に回動付勢されることを特徴とする請求項１に記載のロック機構付き締付装置。The arm includes rotating shaft urging means for urging the second and third rotating shafts closer to each other, and the operation lever is configured to move the third rotating shaft to a dead point by the rotating shaft urging device. 2. The tightening device with a lock mechanism according to claim 1, wherein the device is rotated and biased in a direction away from the position. 上記第１回動軸と第２回動軸との間には、これら第１，第２回動軸を互いに遠ざける方向に付勢する回動軸付勢手段が配置され、上記操作レバーはこの回動軸付勢手段により、上記第３回動軸がデッドポイントにある位置から遠ざかる方向に回動付勢されることを特徴とする請求項１に記載のロック機構付き締付装置。A rotation axis urging means for urging the first and second rotation axes in a direction away from each other is arranged between the first rotation axis and the second rotation axis. The tightening device with a lock mechanism according to claim 1, wherein the third rotating shaft is biased by the rotating shaft biasing means in a direction away from a position at the dead point. 上記ロックピンの一端部は、上記操作レバーの一方の側壁の支持穴に遊びをもって貫通することにより回動可能に支持され、ロックピンの他端部は操作レバーの他方の側壁の長穴を貫通して操作レバーの外に突出するつまみ部となり、上記係止爪は操作レバー内において操作レバーの他の側壁に近接して配置され、上記操作レバーのつまみ部が長穴に沿って、係止爪への係合位置と係止爪から離れた係合解除位置との間で移動可能となっていることを特徴とする請求項１〜３のいずれかに記載のロック機構付き締付装置。One end of the lock pin is rotatably supported by passing through a support hole in one side wall of the operation lever with play, and the other end of the lock pin passes through a long hole in the other side wall of the operation lever. And a locking portion protruding out of the operating lever, the locking claw is disposed in the operating lever near the other side wall of the operating lever, and the locking portion of the operating lever is locked along the elongated hole. The tightening device with a lock mechanism according to any one of claims 1 to 3, wherein the device is movable between an engagement position with the claw and an engagement release position separated from the locking claw. 上記係止爪は上記第３回動軸の反対側に突出し、上記ピン付勢手段は引張コイルバネからなり、その一端が上記ロックピンに掛けられ、他端が操作部材に設けられた引掛部に掛けられ、この引掛部はロックピンより操作レバーの基端部側に配置され、この引張コイルバネによりロックピンが第３回動軸に向かって付勢されていることを特徴とする請求項１〜４のいずれかに記載のロック機構付き締付装置。The locking claw protrudes on the opposite side of the third rotation shaft, and the pin urging means is formed of a tension coil spring, one end of which is hooked on the lock pin, and the other end of which is hooked on a hook provided on the operating member. The hook portion is disposed on the base end side of the operation lever with respect to the lock pin, and the lock pin is urged toward the third rotation axis by the tension coil spring. 5. The tightening device with a lock mechanism according to any one of 4. 上記第３回動軸が上記引掛部として提供されることを特徴とする請求項５に記載のロック機構付き締付装置。The fastening device with a lock mechanism according to claim 5, wherein the third rotation shaft is provided as the hook.
JP2002351488A 2002-12-03 2002-12-03 Tightening device with lock mechanism Expired - Lifetime JP4285729B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2002351488A JP4285729B2 (en) 2002-12-03 2002-12-03 Tightening device with lock mechanism
AU2003284522A AU2003284522A1 (en) 2002-12-03 2003-12-02 Tightening device with lock mechanism
PCT/JP2003/015381 WO2004051037A1 (en) 2002-12-03 2003-12-02 Tightening device with lock mechanism
KR1020057009974A KR101062518B1 (en) 2002-12-03 2003-12-02 Fastening device with locking mechanism
US10/537,170 US7226092B2 (en) 2002-12-03 2003-12-02 Fastening device with lock mechanism
CN2003801048351A CN1720380B (en) 2002-12-03 2003-12-02 Tightening device with lock mechanism

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JP2004183320A true JP2004183320A (en) 2004-07-02
JP2004183320A5 JP2004183320A5 (en) 2007-01-18
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AU2003284522A1 (en) 2004-06-23
US7226092B2 (en) 2007-06-05
JP4285729B2 (en) 2009-06-24
US20060071481A1 (en) 2006-04-06
CN1720380B (en) 2010-04-28
KR20050085291A (en) 2005-08-29
CN1720380A (en) 2006-01-11
KR101062518B1 (en) 2011-09-06
WO2004051037A1 (en) 2004-06-17

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